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Lower PartsValue Tier

CMMG

CMMG Lower Parts Kit

Complete mil-spec lower parts kit with all pins, springs, and detents. Quality baseline for any build.

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Quick Specs

Price
Contact for price
Weight
N/A
Brand
CMMG
Category
lower-part

Features

  • •Complete LPK
  • •Mil-spec trigger group
  • •All pins and springs included
  • •Pistol grip included

Compatibility Tags

family: ar-pattern

Overview

CMMG AR-15 Lower Parts Kits are crafted to meet and exceed mil-spec standards, providing builders with a reliable foundation for their AR-15 platform. These kits are known for their exceptional organization and quality control, with parts packaged in a labeled plastic form that saves significant installation time.

The CMMG LPK includes all necessary components to complete a stripped lower receiver, including takedown pins, safety selector, bolt catch assembly, magazine catch, and all required springs and detents. The mil-spec trigger group provides reliable function with standard AR-15 specifications. Each component is manufactured to proper dimensions and heat-treated appropriately for durability.

This kit represents an excellent value for builders who want quality mil-spec components without premium pricing. The straightforward design ensures compatibility with all standard AR-15 lower receivers, making it a popular choice for first-time builders and experienced gunsmiths alike.

Key Features

  • ✓Complete lower parts kit with all pins, springs, and detents included
  • ✓Mil-spec trigger group with reliable function
  • ✓Organized packaging with labeled components for easy installation
  • ✓Quality controlled parts manufactured to proper dimensions
  • ✓Compatible with all standard AR-15 lower receivers
  • ✓Includes pistol grip and all necessary hardware
  • ✓Exceeds mil-spec standards for durability

Pros

  • +Excellent organization saves 20-30 minutes of sorting time
  • +Consistent quality control with proper fit on mil-spec lowers
  • +Outstanding value for the price point
  • +All components meet or exceed mil-spec standards
  • +Reliable performance in all conditions
  • +Easy installation for first-time builders

Cons

  • −Basic mil-spec trigger group (upgrade recommended for competition)
  • −Occasional quality control issues with missing parts reported
  • −Trigger pins may vary slightly in diameter (.1525" vs .154" standard)
  • −Standard components lack enhanced features of premium kits

Detailed Specifications

compatibility
AR-15 / M4 platforms
triggerPullWeight
5.5-8.5 lbs (mil-spec)
pinDiameter
.154" standard (small pin)
finish
Phosphate on steel components
Material
Steel construction per mil-spec
includesFCG
Yes - complete trigger group
includesGrip
Yes - A2 style pistol grip

Compatible Platforms

+23 more

Palmetto State Armory

PSA PA-15 16" Carbine

Smith & Wesson

Smith & Wesson M&P15 Sport II

Aero Precision

Aero Precision M4E1 Complete Rifle 16"

Bravo Company Manufacturing

BCM RECCE-16 MCMR

Bravo Company Manufacturing

BCM RECCE-11 MCMR

Sig Sauer

Sig MCX Virtus Patrol 16"

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Aero Precision

Aero Precision LPK (No Fire Control Group)

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ALG Defense ACT Trigger

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Redi-Catch MARS-L Safety Selector

Magpul

Magpul B.A.D. Lever

Build Your Custom Configuration

Add the CMMG Lower Parts Kit to your build and see how it enhances your platform.

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